Closing of the tank box and the spiral assembly by the drive means that the coal in the tank is transferred by spiral rotation.

The characteristics of the screw conveyor are: simple structure, small cross-section size, good sealing, reliable work, low manufacturing cost, convenient loading and unloading in the middle, reversible conveying direction, and simultaneous conveying in the opposite direction. The material can also be agitated, mixed, heated, and cooled during transportation. Through the loading and unloading gate can adjust the material flow. However, it is not advisable to transport perishable, sticky, brittle and bulky materials. In the process of conveying, the materials are easily broken, and the spiral and feed trough are easy to wear. The unit power is larger. Keep the tightness of the feed trough and the proper clearance between the screw and feed trough during use.

Vertical screw conveyors are suitable for short vertical transport. The spiral of the flexible screw conveyor is composed of a flexible shaft and a synthetic rubber blade, which is easy to bend and can be freely arranged according to site or process requirements for space transportation. Spiral conveyor blades now have pull-type and pull-out, now pull-type can be made of any thickness and size specifications, the entire pull-type should not be made of non-standard spiral.

From the perspective of the direction of displacement of the transport material, Hongtai screw conveyors are divided into two types: horizontal screw conveyors and vertical screw conveyors. They are mainly used for loose materials such as powder, granules and small pieces. Horizontal conveying and vertical lifting, the screw conveyor is not suitable for conveying special materials that are easily deteriorating, sticky, easy to agglomerate or have high temperature, pressure, and corrosivity.

The screw conveyor is generally composed of three parts: a conveyor body, an inlet and outlet, and a driving device; the screw blades of the screw conveyor have three types: a solid spiral surface, a belt spiral surface, and a blade spiral surface. Among them, the blade spiral surface application Relatively few, mainly used for conveying more viscous and compressible materials. This screw-suspension type has the functions of agitation and mixing of materials at the same time during the completion of the conveying operation.

Compared with other conveying equipment, the screw conveyor has the advantages of small size of the cross section, good sealing performance, stable and reliable operation, multi-point loading and unloading, safe operation, and easy maintenance.